The 41A3489 LiftMaster chain drive trolley assembly from Garage Door Supply Company is compatible with all Chamberlain, Craftsman and LiftMaster chain drive garage door openers with T-rail configurations made since 1984. This replacement LiftMaster trolley assembly is also compatible with Wayne Dalton post-1984 chain drive garage door operators. All-steel construction equals durability.
The trolley assembly includes a trolley, 6-link chain extension, master link, master link cap, master link clip-on spring and trolley shaft. Also included with this LiftMaster garage door trolley assembly are an inner nut, outer nut, lock washer and inner slide. Installation instructions are included.
- Replaces trolley assemblies on T-rail chain drive garage door openers made since 1984 by LiftMaster, Chamberlain, Sears Craftsman, Wayne Dalton
- All steel construction
- Includes trolley, trolley shaft, 6-link chain extension, master link, master link cap
- Includes master link clip-on spring, inner nut, outer nut, lock washer, inner slide
- Installation instructions included